-----------------------------------STDERR-----------------------------------
WARN deprecated on Windows, run them from an Administrator prompt.)
npm WARN deprecated
npm WARN deprecated If you're running the version of npm bundled with
npm WARN deprecated Node.js 0.10 LTS, be aware that the next version of 0.10 LTS
npm WARN deprecated will be bundled with a version of npm@2, which has some small
npm WARN deprecated backwards-incompatible changes made to `npm run-script` and
npm WARN deprecated semver behavior.
npm WARN package.json meteor-dev-bundle@0.0.0 No description
npm WARN package.json meteor-dev-bundle@0.0.0 No repository field.
npm WARN package.json meteor-dev-bundle@0.0.0 No README data
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed

+1 having the same problem. It was driving me nuts for about 10 hours. I thought i had some faulty code and had to deploy for every single file to check. After i did that i found out its not working anymore because of the Meteor 1.3 Update!

It did work with METEOR@1.3-beta.11 (it still does – i am leaving it on this version for now) but as soon as i update to the 1.3-not-beta-version it wont deploy anymore with the exact message ("error: Forever detected script exited with code: 8)

I found some useful info on Github and when I was attempting my own upload with mup. It looks like the bcrypt package needs updating to 0.8.5 for it to work. Not sure if this is due to the update to node 0.10.43.